[PATCH v2 6/6] wineusb.sys: Implement IRP_MN_QUERY_DEVICE_RELATIONS.
Zebediah Figura
z.figura12 at gmail.com
Wed Apr 15 09:43:23 CDT 2020
Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
---
dlls/wineusb.sys/wineusb.c | 53 ++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/dlls/wineusb.sys/wineusb.c b/dlls/wineusb.sys/wineusb.c
index 22804d8657..b60d496e9e 100644
--- a/dlls/wineusb.sys/wineusb.c
+++ b/dlls/wineusb.sys/wineusb.c
@@ -38,6 +38,23 @@
WINE_DEFAULT_DEBUG_CHANNEL(wineusb);
+#if defined(__i386__) && !defined(_WIN32)
+
+extern void * WINAPI wrap_fastcall_func1( void *func, const void *a );
+__ASM_STDCALL_FUNC( wrap_fastcall_func1, 8,
+ "popl %ecx\n\t"
+ "popl %eax\n\t"
+ "xchgl (%esp),%ecx\n\t"
+ "jmp *%eax" );
+
+#define call_fastcall_func1(func,a) wrap_fastcall_func1(func,a)
+
+#else
+
+#define call_fastcall_func1(func,a) func(a)
+
+#endif
+
#define DECLARE_CRITICAL_SECTION(cs) \
static CRITICAL_SECTION cs; \
static CRITICAL_SECTION_DEBUG cs##_debug = \
@@ -172,6 +189,42 @@ static NTSTATUS fdo_pnp(IRP *irp)
switch (stack->MinorFunction)
{
+ case IRP_MN_QUERY_DEVICE_RELATIONS:
+ {
+ struct usb_device *device;
+ DEVICE_RELATIONS *devices;
+ unsigned int i = 0;
+
+ if (stack->Parameters.QueryDeviceRelations.Type != BusRelations)
+ {
+ FIXME("Unhandled device relations type %#x.\n", stack->Parameters.QueryDeviceRelations.Type);
+ break;
+ }
+
+ EnterCriticalSection(&wineusb_cs);
+
+ if (!(devices = ExAllocatePool(PagedPool,
+ offsetof(DEVICE_RELATIONS, Objects[list_count(&device_list)]))))
+ {
+ LeaveCriticalSection(&wineusb_cs);
+ irp->IoStatus.Status = STATUS_NO_MEMORY;
+ break;
+ }
+
+ LIST_FOR_EACH_ENTRY(device, &device_list, struct usb_device, entry)
+ {
+ devices->Objects[i++] = device->device_obj;
+ call_fastcall_func1(ObfReferenceObject, device->device_obj);
+ }
+
+ LeaveCriticalSection(&wineusb_cs);
+
+ devices->Count = i;
+ irp->IoStatus.Information = (ULONG_PTR)devices;
+ irp->IoStatus.Status = STATUS_SUCCESS;
+ break;
+ }
+
case IRP_MN_START_DEVICE:
if ((ret = libusb_hotplug_register_callback(NULL,
LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED | LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT,
--
2.26.0
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